MenuItem HotKey only works after the menu item has been displayed at least once.

It looks like this is the same issue which was fixed in #290. If the HotKey property of a MenuItem is set, it will not work until the user has opened the menu which contains that MenuItem.

To reproduce the bug simply add the following changes to the Menu sample in the ControlCatalog. In MenuItemViewModel.cs

    public class MenuItemViewModel
    {
        public string Header { get; set; }
        public ICommand Command { get; set; }
        public object CommandParameter { get; set; }
        public IList<MenuItemViewModel> Items { get; set; }
        // Add the Gesture property.
        public KeyGesture Gesture { get; set; }
    }

In MenuPage.xaml:

                <TextBlock Classes="h3" Margin="4 8">Dyanamically generated</TextBlock>
                <Menu Items="{Binding MenuItems}">
                    <Menu.Styles>
                        <Style Selector="MenuItem">
                            <Setter Property="Header" Value="{Binding Header}"/>
                            <Setter Property="Items" Value="{Binding Items}"/>
                            <Setter Property="Command" Value="{Binding Command}"/>
                            <Setter Property="CommandParameter" Value="{Binding CommandParameter}"/>
                            <!-- Add a binding for the HotKey property -->
                            <Setter Property="HotKey" Value="{Binding Gesture}"/>
                        </Style>
                    </Menu.Styles>
                </Menu>

In MenuPageViewModel.cs

                    Items = new[]
                    {
                        new MenuItemViewModel { Header = "_Open...", Command = OpenCommand },
                        // Assign a gesture to the Save command.
                        new MenuItemViewModel
                        {
                            Header = "Save",
                            Command = SaveCommand,
                            Gesture = new Avalonia.Input.KeyGesture(Avalonia.Input.Key.S, Avalonia.Input.InputModifiers.Control)
                        },
                        new MenuItemViewModel { Header = "-" },
                        // The rest of the items....

With these changes, run the ControlCatalog.Desktop project, and go to the Menu page. Press Ctrl+S and notice that nothing will be printed in the output. Open the menu which contains the Save command, and press Ctrl+S again. This time it will print Save in the output.

[Raymonf]

A workaround is to use KeyBindings on the window, if anyone finds this thread in the future:

<Window.KeyBindings>
    <KeyBinding Gesture="Ctrl+O" Command="{Binding OpenCommand}" />
</Window.KeyBindings>

[robloo]

Instead of InputBindings in might be good to look at the ‘updated’ concept of KeyboardAccelerator from UWP.

https://docs.microsoft.com/en-us/windows/uwp/design/input/keyboard-accelerators https://docs.microsoft.com/en-us/windows/uwp/design/input/keyboard-interactions

Oh, and then there is gestures for special touch input 😃